The Whirlibird IV Interchange Jacket offers year round wear in the form of three layering options and a little more bang for her buck. Columbia's Omni-Tech, 10k/10k waterproof and breathable polyester rebound shell fabric works hard to repel moisture from the element to keep you dry and moving day in and out, while the lining is equipped with Omni-Heat Thermal Reflective Polyester to retain the body heat for an added boost of warmth. With its interchanging features, you'll have a shell jacket for the cool days on the mountain, a liner for the fall and spring time on those chilly days and then you can combine the two for an incredible jacket on the coldest of days. There are zippered hand pockets, a security pocket and even a goggle pocket so you can carry everything you need. If you're looking for the perfect jacket that'll keep you warm in the fall weather all the way through the frigid days of winter, you'll want to get the rugged Columbia Whirlibird IV Interchange Jacket. 10k/10k Omni-Tech Waterproof/Breathable - 100% Generation Dobby Nylon, Omni-Heat Thermal Reflective - 100% Nylon 210T Taffeta, Matte Face Windbreaker - 100% Polyester Plain Weave Liner Jacket w/Thermarator 100% Polyester Insulation and Omni-Heat Lining, Zip-In Interchange System, Attached, Adjustable Hood w/Drawcord, Adjustable, Snap Back Powder Skirt w/Silicone Grippers, Zippered Chest Pocket, Interior Security Pocket, Zippered Hand Pockets, Drawcord Adjustable Hem, Exterior Material: 10k/10k Omni-Tech Waterproof/Breathable - 100% Generation Dobby Nylon // Matte Face Windbreaker - 100% Polyester Plain Weave Liner Jacket, Insulation Weight: Thermarator 100% Polyester Insulation and Omni-Heat Lining, Taped Seams: None, Waterproof Rating: 10,000mm, Breathability Rating: 10,000g, Hood Type: Fixed, Pit Zip Venting: Yes, Powder Skirt: Yes, Warranty: Lifetime, Battery Heated: No, Race: No, Type: 3-in-1 Jacket, Jacket Fit: Regular, Length: Hip, Insulation Type: Synthetic, Waterproof: Mild Waterproofing (5,001 - 10,000mm), Breathability: Mild Breathability (5,001 - 10,000g), Cuff Type: Hook and Loop, Wrist Gaiter: No, Waterproof Zippers: No, Cinch Cord Bottom: Yes, Warmth Factor: Warmer, How Does This Fit?: True To Size, Model Year: 2021, Product ID: 604178, Model Number: 1866753452 LT, GTIN: 0193855652156